Quiz Preview! Lessons 5-1 To 5-3
(3).webp "Quiz Preview! Lessons 5-1 To 5-3 - Quiz")
This is a preview quiz over lessons 5-1 to 5-4. Take it and practice!
- 1.
28 + (-34)
- A.
62
- B.
6
- C.
-6
- D.
-62
Correct Answer
C. -6Explanation
The signs are different, so subtract and keep the sign of the number with the largest absolute value.Rate this question:
-
- 2.
-5.68 - 1.2 =
- A.
-6.88
- B.
6.88
- C.
-4.48
- D.
4.48
Correct Answer
A. -6.88Explanation
Remember - Leave it, change it, change it. Leave the first number alone, change the subtraction to addition, and change the sign of the second number.Rate this question:
-
- 3.
What is the absolute value of -27?
- A.
-27
- B.
27
Correct Answer
B. 27Explanation
The absolute value of a number is its distance from zero on the number line. Since -27 is 27 units away from zero in the negative direction, the absolute value of -27 is 27.Rate this question:
-
- 4.
What property says that a + b = b + a?
- A.
Betweenness property
- B.
Commutative property
- C.
Associative property
- D.
Angle addition property
Correct Answer
B. Commutative propertyExplanation
The commutative property states that the order of addition does not affect the result. In other words, for any two numbers a and b, a + b is equal to b + a. This property holds true for addition in mathematics.Rate this question:
-
- 5.
A recipe calls for t cups of cheese, k cups of coffee, and m cups of green beans, for a total of g cups of ingredients. Write an equation relating t, k, m and g.
- A.
T - k - m = g
- B.
T + k + g = m
- C.
T + k + m = g
Correct Answer
C. T + k + m = gExplanation
The equation t + k + m = g represents the relationship between the number of cups of cheese (t), cups of coffee (k), and cups of green beans (m) needed in a recipe, which together make up the total number of cups of ingredients (g).Rate this question:
-
- 6.
Rewrite the expression m - n, using the algebraic definition of subtraction.
- A.
-m - (-n)
- B.
M - (-n)
- C.
-m + n
- D.
M + -n
Correct Answer
D. M + -nExplanation
The correct answer is m + -n because the algebraic definition of subtraction states that subtracting a number is the same as adding its opposite. In this case, subtracting n is the same as adding -n. Therefore, rewriting m - n using the algebraic definition of subtraction gives us m + -n.Rate this question:
-
- 7.
If you have a clockwise 60 degree turn followed by a 240 degree counterclockwise turn, followed by a clockwise 20 degree turn, what is the result?
- A.
-160 degrees
- B.
160 degrees
- C.
320 degrees
- D.
-320 degrees
Correct Answer
B. 160 degreesExplanation
The result of the given sequence of turns can be found by adding up the angles in a clockwise direction and subtracting the angles in a counterclockwise direction. In this case, we have a clockwise 60 degree turn followed by a 240 degree counterclockwise turn, which cancels out the initial clockwise turn. Finally, we have a clockwise 20 degree turn. Adding up all the clockwise turns, we get 60 + 20 = 80 degrees. Since there are no counterclockwise turns remaining, the final result is 80 degrees in a clockwise direction. Therefore, the correct answer is 160 degrees.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Apr 17, 2023Quiz Edited by
ProProfs Editorial Team -
Jan 11, 2010Quiz Created by
Scottwodahl
Back to top